Evidence map›Paper›PMID 24272483›Full record

ArticleCancer research2014

Cyclophilin B supports Myc and mutant p53-dependent survival of glioblastoma multiforme cells.

Jae Won Choi, Mark A Schroeder, Jann N Sarkaria, Richard J Bram

Abstract read
In one paragraph

Article in Cancer research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  15. The Role of Cyclophilins in Inflammatory Bowel Disease and Colorectal Cancer.International journal of biological sciences · 2021
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Jae Won ChoiAuthors' Affiliations: Departments of Immunology, Radiation Oncology, and Pediatric and Adolescent Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota.
Mark A Schroeder
Jann N Sarkaria
Richard J Bram

Funding

Women's Cancer ProgramP30CA015083 · NCI · MAYO CLINIC ROCHESTER · PI Felicity Enders · 1985 to 2026
$151.3M
Targeted MV-CEA as a Potent Antitumor Agent against GBMP50CA108961 · NCI · MAYO CLINIC ROCHESTER · PI O'NEILL, BRIAN PATRICK · 2004 to 2015
$22.5M
Cyclophilin B as a therapeutic target in glioblastomaR01NS077555 · NINDS · MAYO CLINIC ROCHESTER · PI BRAM, RICHARD J · 2011 to 2015
$1.7M
High throughput screen for selective inhibitors of cyclophilin BR01NS083937 · NINDS · MAYO CLINIC ROCHESTER · PI BRAM, RICHARD J · 2013 to 2015
$1.2M
NCI NIH HHS CA108961NCI NIH HHS P30 CA015083NCI NIH HHS P50 CA108961NINDS NIH HHS R01 NS077555NINDS NIH HHS R01 NS083937NINDS NIH HHS R01-NS77555
6 · The paper itself

Abstract

Glioblastoma multiforme is an aggressive, treatment-refractory type of brain tumor for which effective therapeutic targets remain important to identify. Here, we report that cyclophilin B (CypB), a prolyl isomerase residing in the endoplasmic reticulum (ER), provides an essential survival signal in glioblastoma multiforme cells. Analysis of gene expression databases revealed that CypB is upregulated in many cases of malignant glioma. We found that suppression of CypB reduced cell proliferation and survival in human glioblastoma multiforme cells in vitro and in vivo. We also found that treatment with small molecule inhibitors of cyclophilins, including the approved drug cyclosporine, greatly reduced the viability of glioblastoma multiforme cells. Mechanistically, depletion or pharmacologic inhibition of CypB caused hyperactivation of the oncogenic RAS-mitogen-activated protein kinase pathway, induction of cellular senescence signals, and death resulting from loss of MYC, mutant p53, Chk1, and Janus-activated kinase/STAT3 signaling. Elevated reactive oxygen species, ER expansion, and abnormal unfolded protein responses in CypB-depleted glioblastoma multiforme cells indicated that CypB alleviates oxidative and ER stresses and coordinates stress adaptation responses. Enhanced cell survival and sustained expression of multiple oncogenic proteins downstream of CypB may thus contribute to the poor outcome of glioblastoma multiforme tumors. Our findings link chaperone-mediated protein folding in the ER to mechanisms underlying oncogenic transformation, and they make CypB an attractive and immediately targetable molecule for glioblastoma multiforme therapy.

Indexed as

Gene Expression Regulation, NeoplasticAnimalsAstrocytesbeta-GalactosidaseBrain NeoplasmsCell ProliferationCell SurvivalCell Transformation, NeoplasticCellular SenescenceCyclophilinsGene Expression Regulation, EnzymologicGenes, p53GlioblastomaHumansMiceMice, Nudebeta-Galactosidasecyclophilin BCyclophilinsNFATC2 protein, humanNFATC Transcription FactorsProto-Oncogene Proteins c-mycReactive Oxygen SpeciesTP53 protein, humanTumor Suppressor Protein p53

Identifiers

PMID24272483
PMCPMC3935234

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.